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321S51 520

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321S51 510 318S13
#321S51

Description

UK B.S. BS 1506, 321S51 520 Specialsteel Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 321S51 520
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 321S51 520 B.S. UK Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications

Chemical composition(mass fraction)(wt.%) of the 321S51 520

C Si Mn P S Cr Mo Ni Ti
0.04 -0.10 ≤1.00 ≤2.00 ≤0.045 ≤0.025 17.00 -19.00 ≤ ≥ 9.00 -12.00 ≤0.80

Mechanical Properties of steel grade 321S51 520

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
991 (≥) 748 (≥) 12 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade 321S51 520

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
11 - -     0.12 -  
137 927 - 24.3 211   -  
335 - 24 43.2   123 113

Heat Treatment of steel grade 321S51 520

Heat treated : 1329°C - 1562°C

Technological Curves of steel grade 321S51 520

Cross Reference Table (Equivalent Grade) of 321S51 520

Grade Standard Country Application
321S51(1010)
321S51(1010)
321S51(1105)
321S51(1105)

Relevant standard of 321S51 520

BS 1506 Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications BS-1506.pdf
321S51 510 318S13
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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